| 小麦拔节期农学参数和土壤含水量空间统 |
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| 引用本文： | 杨玉建,朱建华,刘淑云,唐研,刘延忠,封文杰.小麦拔节期农学参数和土壤含水量空间统[J].农业机械学报,2009,40(Z1):159-164. |
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| 作者姓名： | 杨玉建 朱建华 刘淑云 唐研 刘延忠 封文杰 |
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| 作者单位： | 山东省农业科学院科技信息工程技术研究中心,济南,250100 |
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| 基金项目： | 山东省农业科学院重大成果培育项目，农业部公益性行业专项资助项目 |
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| 摘 要： | 选取山东省陵县的小麦试验示范基地作为样区,采用GPS定位调查,获取田间21个样点的土壤和小麦植株样品,运用TDR300测定样点土壤含水量,利用SPAD502叶绿素仪测定采样点拔节期小麦植株叶片的叶绿素含量,获取小麦干物质产量信息.基于地统计学原理,结合空间分析技术,探讨了小麦叶绿素含量、干物质产量等农学参数信息和土壤含水量的空间变异特征.研究结果表明,土壤水分和小麦叶绿素含量的空间变异呈强的空间相关性,结构性因素引起的空间变异分别占到总变异97.3%和81.3%.小麦干物质产量具有中等程度的空间变异性,由结构性因素引起的变异占到总变异的50%.土壤含水量、小麦叶绿素含量Kriging插值空间分布呈现明显的片状和斑块状特点,小麦干物质产量Kriging空间分布具有明显的带状分布特点.
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| 关 键 词： | 冬小麦 农学参数 土壤 含水量 空间统计 |
Statistic Properties of Agronomic Parameters and Soil Moisture Content in Wheat Jointing Stage |
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| Yang Yujian Zhu Jianhua Liu Shuyun Tang Yan Liu Yanzhong Feng Weijie.Statistic Properties of Agronomic Parameters and Soil Moisture Content in Wheat Jointing Stage[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(Z1):159-164. |
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| Authors: | Yang Yujian Zhu Jianhua Liu Shuyun Tang Yan Liu Yanzhong Feng Weijie |
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| Institution: | Information Center of Shandong Academy of Agricultural Science;Ji'nan 250100;China |
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| Abstract: | The experimental area was selected in Lingxian County of Shandong Province.Based on the GPS positioning data,soil moisture content,chlorophyll content and wheat dry matter production was measured.Geostatistical analysis was conducted combined with geographical information system(GIS) and the semivariogram models were established.It was found that a spherical model fit semivariogram model of soil moisture content better,and a Gaussian model was the better model for wheat chlorophyll content and dry matter pr... |
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| Keywords: | Winter wheat Agronomic parameters Soil Moisture content Spatial statistics |
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